/*
* GOST 34.11
* (C) 2009 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#ifndef BOTAN_GOST_3411_H_
#define BOTAN_GOST_3411_H_

#include <botan/hash.h>
#include <botan/gost_28147.h>

namespace Botan {

/**
* GOST 34.11
*/
class BOTAN_PUBLIC_API(2,0) GOST_34_11 final : public HashFunction
   {
   public:
      std::string name() const override { return "GOST-R-34.11-94" ; }
      size_t output_length() const override { return 32; }
      size_t hash_block_size() const override { return 32; }
      HashFunction* clone() const override { return new GOST_34_11; }
      std::unique_ptr<HashFunction> copy_state() const override;

      void clear() override;

      GOST_34_11();
   private:
      void compress_n(const uint8_t input[], size_t blocks);

      void add_data(const uint8_t[], size_t) override;
      void final_result(uint8_t[]) override;

      GOST_28147_89 m_cipher;
      secure_vector<uint8_t> m_buffer, m_sum, m_hash;
      size_t m_position;
      uint64_t m_count;
   };

}

#endif